Separator.



G. H. FRASER.

SEPARATOR.

APPLICATION FILED JUNE 29. 1915.

Patented Dec. 28, 1915.

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March so, 1915, Serial No. 18,128.

Divided and this application filed June 29,1915. Serial No. 37,032.

To all whom it may concern;

Beit known that I, GEORGE HOLT FRASER,

acitizen of the United. States, residing in theborough of Brooklyn, in the county of I Kings, in the city and State of New York, United 'States of America, have invented.

certain new and, useful .Improvementsin Separators, ofv which the following is a specification, being a division of my plication No; 599,913, filedzDecember 29, 1910.

This invention relates to devices for sep: arating, sizing, bolting, classifying, treat ing or collecting, materials by utilizinga fluid current, and aims to provide certain improvements therein.

' Heretofore it has been common to distribute material within a feed chamberin.

whichair currents act to draw the fine 'materlal 111130 an outer casing, the fines settling in the outer casing and the air returning to the feed chamber, the coarse material falling through the air currents in the feed chamber and discharging from the bottom of the latter.

My invention provides improvements especially applicable to devices of this general character, and in its preferred form it utilizes a non-rotary feed tube and an initial distributer, in conjunction with a plurality of superposed annular distributers successively receiving the material, an annular ex haustchamber for each distributor, a blower for each distributer, an annular discharge passage for the combined exhaust of theseveral blowers, and a plurality of settling chambers successively receiving thereturn current and classifying the material in suspension therein, a reverse return passage for each settling chamber, means for separately withdrawing the different products, means for adjusting the currents for the respective distributers, and means forcontrolling the main current.

My invention also. includes means for drivin the distributer and blower, means for a justing the non-rotary feed spout, improved bearings and bearing dispositions, and various features of improvement in construction, arrangement and :details, all of which will be hereinafter more fully set forth.

Theaccompanying drawing which shows hopper, D the distributer, F a blower, G the dust chamber, H the return passage, I the coarse outlet, and j the fine outlet. These may be of any usual or suitable construction and arrangement capable of distributing the feed, creating 'the necessary current, and collecting and discharging the products.

Referring to the drawing, I will now describe in detail the preferred form of my invention in. the adaptation therein illustrated.

The casing A base. cylindrical body a, and tapering or conical' top and bottom, made insections, preferably halves, braced and flanged, and adapted to be bolted to the adjoining circumferential sections, and it has as many vertical sections as are desired to give the requisite height, two beingshown. These sections are shown as straight and connected bybarsb which tend to preservethe cylindrical form of the body and support the internal partsin position. The upper part of the casing consists of a head 0 which is tapered the' form of a truncated cone and hasan annular top d, and a central cavity or depressed portion 6.

Specification of- Letters Patent. te t as, 19115,, Originalapplicatidn filed. December as, 1910, Seria1 No. 599,913. Renewed The lowerpart of the casing consistsof a.

conical bottom f, suspended from the top body a. The body a is suspended from the top 0?, and the latter is suspended from the bearing frame 9". I i

The driving mechanism shown consists of a driving shaft 71. carrying fast and loose pulleys z, and geared to the drivenpa'rts by bevel gears. This shaft is mountedin bearings in the frame 9, which frame is shown as crossing the machine and supported by timbers at each side thereof, and the entire device as shown is suspended from the frame, which has one face coinciding with the diametric parting of the body.

The hopper C is preferably a stationary hopper, adapted to turn in any direction to connect with any source of feed, and preferably having a scalper and a tailing chute,

and a screw threaded discharge outlet.

The feeder is preferably a non-rotary feed pipe J which is preferably vertically adjustable, as by screwing into the hopper outlet,

and which leads into the casing and dis.-

charges onto a, distributor K therein, the speed of feed being determined by vertical adjustment of the pipe, or of the distributor, or of both, as desired,

The distributer is preferably a. rotary member, and'pref'erably comprises the. di

K and one or more successive distributors, as the rings Land. M, which are carried by.

. andrevolve with. the disk K in the construe:

there is another similar bafiie ring I, recei ing discharge from the ring L and directing it down onto the ing M; opposite. which there is another baflle ring at deflecting the mater al. downwardly toward the return cone 0. Opposite. each. bafiie ring. there is an annular exhaustpassage.v These are lettered' P Q and B respectively. Collectors n and 0 and M.

The exhaust passages all preferably dis h rgeiinto theexhaust; .charnber...'l, whloh tapers downwardly and outward y and. di rects their combined discharge into the an-- nnlar passage. U, through whichit passes to the dust chamber G; As the current descendsin and escapes from the passage U the heavier dust may be close to the outer wall, from which it will slide into the chamber G, and the air will be corresplondinglgr cleaned of larger particles, The e. amber 1;

has a cylindrical discharge pipe i. As the air discharges from the passage into th settling chamber G the returnin air isdrawn from it by an intake V, o greater superficial area than that ofthe' passage U and immediately adjacent thereto, so that.

the downward. motion ofthe dust: the

discharge from the passage- U may have opportunity to throw out: much dust centrif ugally within the chamber G as the air current reverses to reach the return The air in the chamber G cleans itself'bythe \process of settling, and by momentum and precipitation, before escaping through the. return V, the area of which relative to the passage U'is sufficiently great to so diminish the speed of flow of the return current for the air'tolargely free itself of large floating particles.

Abafile ring '0 is preferably disposed above the chamber G to intercept the air as it whirlsinwardlyand to direct it toward the adjacent cone and meet upward currents there, and a regulating ring or damper W is. preferably vertically ad ust able within the passage V to control the air of the return and thus regulate its cur rent speed. An annular suspended Wall to of the return passage converge the material on rings. L,

1,1eu,see

- constitutes the partition. between the passages U' and V and serves as the outer wall ofthe return passage The cone X constitutes the inner wallfbf this passage as well as the inner wall. of. the succeeding settling chamber 0",, and has an outlet w The air current flowing g, swings: inwardly past the dampenW and upwardly over the top edge of the-cone X, and then flows eventually throughjhe passage H; to the center of the chamber- Q, from. whenceit may continueto the distributers, between which it may again be forced. through the suctionpassages by the blower F. blow ing-to: thcpassages it must traverse the dc scendingshower of. material falling from each.- distributer to the nest, composed o coarse and fine material, from which, as: the current passes through, particles fine enough to be floated by itv will e ar ied. outward and downward through theblast chamber '1, while the coarser material. will continue through. the inlet over-the distributors to the return cone. 0

and: be. dropped. from the latter into the bot tomof. the tailings cone S,

Adjustment or regulation of: the current.

as; to the. different. :distributersmav o tained by difierentiating the blower speed, or otherwise, but is preferably e fe ed rom 'wiithinthe chamber E, as by the damper Y controlling the passage a beneath the disk. K, the damper controlling; the passage 2. beneath. the distributor L, and the damp A controlling the inlet a; beneath the. distributer-M.

Incl ned annular Walls 6 which. pro ide isolated passagesriinwardly of: the distributors are preferably attached beneathv each distributor, and preferably carry blades o which. serve as the blades of the blower F to generate an outward force current within the distributors... The dampers Y, Z and A are independently adjustable from below in any suitable manner, as: by the rod d" and pipes e'" and f respectively.

llhe distributer and the blower are carried by and driven from a tubular head B:,.wh-ich is 'suitably spaced above them topermit the necessary passage formaterial between a the disk K and the head, and which extends upwardly around the pipe J, and is adjustably suspended from the bearings D and is driven through a gear E" which is preferably driven by a, cone pulley F and belt G from a reverse cone pulley H" on the shaft h. By shifting-the belt the relative speeds of the pulleys F and H can be regulated.

vEach of the bearings consists of an annu-v lar cup a" receiving an annular flange j so that the bearings run in oil. Each bearing is clamped in a halfsocket in the frame 9 so that by removing the clamps the parts can be bodily removed 'sidewise. The parting purifiersof the current returning chamber E.

For classifying or grading the fines my invention preferably provides one or more classifying chambers, between the dust chamber G and the feed chamber E, and a cleaner or dust extractor 'u in the return passage H. One auxiliary settling chamber 0 is shown, which is preferably concentric of and partly inclosed in the chamber G, and surrounds and partly envelops the The discharge from the chamber G slowly flows, therefrom toward the inlet 0 to the first classifying chamber, and is discharged downwardly in the latter through this contracted annular inlet, so that dust in the current may be precipitated by its velocity and by centrifugal action, as well as by gravity, as the discharge expands within the large part of the chamber 0 and the speed diminishes. The exhaust from the chamber 0 is slowly withdrawn through a foraminous or interstitial annular cleaner or dust extractor a surrounding the large outlet P comprising a part. of the return passage H to the cone S and chamber E, or to the succeeding classifying chamber if several are used, Where the operation is repeated as often as desired. From the last classifying chamber the discharge is taken through the exhaust passage V and the return passage H and into the chamber E as before explained. Any desired number of these classifying chambers may be inter-- posed between the discharge and the suction chambers and the fineness of productto'be collected in each may be determined by the extractor discharging into it or properly proportioning the chambers, or the current speeds, or the superficial area of the inlet and outlet. A separate outlet spout may be provided for each chamber, or the various separations may be combined in oneoutlet,

in which case the auxiliary chambers andv cleaners will simply be used as supplemental to the separating' chamber. l

The return passage constitutes a sinuous conduit be'tween the line chamber G and the distri'butingvchamber E, and when one or more cleaners. or extractors are provided in it an intermediate classifying chamber is interposed for each cleaner and these chambers are essentially a part of the return passage, and constitute enlargements or modifications thereof suited to effect the desired current modification best suited to the particular functions of each intermediate chamber. Making these intermediate chambers concentric and annular, and nesting them' together between the tailings cone and the conical bottom of the separator attains A great compactness, while permitting uniform annular current passages which facilitate uniformity of speed of flow at all sides of any part of any passage or chamber.

As thus far described the invention can be used as a current separator alone, but my invention provides for combined mechanical sizings as Well. as current sizings within" the one machine, and this is'preferably accomplished by one or more screens beneath the distributing chamber E, receiving'the discharge from the return cone 0, and grading and sizing it so as to separate out desired sizes before the remaining tailings or fines passing these screens are permitted to fall onto the tailings cone S. Two sizing screens, a coarse'inner one Q, and a medium outer one B each'conical and nested together, are shown as yieldingly suspended by'springs S from the return cone 0, so' as to receive the tailings therefrom. The coarsest material flows down the screen Q and falls through its outlet to the coarsest outlet 9. Material passing through this screen flows down the screen R and material passing through the screen R flows down the cone S to the outlet 1. The outlets r g and I are connected to their respective cones by a series'of conduits or pipes 8 passing each within the next, either concentrically as shown, or nested eccentrically so as to give the greatest external passageway at the lower side if desired. In this manner three mechanical gradings are effected in ad-. dition to the current gradings.

To agitate the mechanical screens my in-- vention provides a swinging knocker T which preferably revolves with the distributer and strikes a projection t on the screen when the latter is depressed, these parts being normally out of coincidence, but being 'feed pipe will be controlled by its adjustment, the speeds and currents will be regulated to give the desired results and the various products will be separately withdrawn according to classification. One or all of the methods of classification will be used according to particular requirements.

It will be understood that the invention is escapes through the medium outlet r, and

not limited to the particular details of con-- struction, arrangement and. combination set forth, as it can be employed in whole or in part according to any modifications.

'Wh'at I claim is:

1. In separators and the like, a casing,

means for distributing material therein, and

means for causing a current to traverse material distributed therein, in combination with means for successively clarifying said current, comprising a settling chamber, a return conduit, filtering provisions in said conduit, and a second chamber for receiving .material from said filtering provisions.

2. In separators and the like, a. casing, means for distributing material therein, and means for causing a current to traverse material distributed therein, in combination with means for collectingm'aterial suspension in said current comprising a dust chamber, a return conduit and a foraminous extractor in said conduit.

3. In separators and the like, a casing,

' means for distributing material therein, and

means for causing a current to traverse material distributed therein, in combination current and discharging into said extraction chamber.

4. In separators and similar devices, a casing, annular means for distributing material rated, of means inwardly of and surrounded downwardly therein in an wardl' annular descending apron, and means for creating a current therein through such material, in combination with annular superposed means successively intercepting such descending material in said casing, and annular current div-iding partitions inwardly of and surround ed by such distributing means dividing such current between said intercepting means in of such distribution.

annular distributers for material to be se a;

by said distributers for causing a current to traverse such material between each distributer independently of theothers. I

6. Iii-separators and similar devices, the combination with a plurality of superposed annular distributers for material to be sepaby such distributers for creating a current through such material opposite each distributer independently of any current opposite other distributers.

7. In separators and similar devices, the combination with a pluralit of superposed annular distributers of unlie diameter for.

material to be separated, of an independent n separators and similar'devices, the to the other, means for driving combination with a plurality of superposed current passage for each distributer inwardly thereof and surrounded thereby.

8. In separators and similar devices, the

combination with a plurality of superposed annular distributers for material to be separated, of an independent blower for, in-

Wardly of, and surrounded by, each dis:

tributer.

9.111 separators and similar devices, the combination with a plurality of superposed annular distributers for material to be separated, of a blast blower surrounded by and inwardly of such distributers for causing an outflowing current therethrough.

10. In separators and similar devices, the combination with a. plurality of distributers for material to be separated, and blowers surrounded thereby, of isolated blast chambers for each distributer and a common exhaust assage for said blowers.

11. n separators and similar devices, the

combination with a plurality of distributers for material to be separated, and a blower, of an annular exhaust passage surrounding said distributers, a reverse return passage inwardly of said exhaust passage, a pervious current cleaner in said return passage,

and a settling chamber communicating the said passages. v

12. In separators and similar devices, a plurality of concentric settling chambers superposed and in successive communica- 14. In separators and similar devices, a

non-rotary feed pipe, a revolving feed disk having a tubular shaft surrounding said pipe, one of said parts adjustable relatively .said disk, means for creating a current through the material falling therefrom, and means for freeing such current from material carried in suspension thereby at successive points comprising a forammous extracting memher and an annular chamber receiving and withdrawing material extracted thereby.

- 15. In separators and the like, a distribu ter, a blower, a conical chamber inclosing I such blower, an annular passage communicating with said chamber, a settling chamber communicating with said passage, an annular return passage within said first named passage, an annular cleaner in said return passage, and. means for taking the current passing said chamber to said distribute-r.

16. In separators and similar devices, a casing, means for distributing material menace lar upwardly extending filtering provisions surrounding such passage.

17. In separators and sirnilar'devices, a

I casing, means for distributing material therein, means for causing a current to traverse the distributed material, a discharge chamber receiving such current at one side of said material, and a return passage communicating with said chamber and return ing such current to the other side of such material, in combination with foraminous upwardly extending'filtering means in the path of such current.

18. In separator-sand similar devices, a casing, means for distributing material therein, means for causing a current to'trav-' erse, such material and a damper beneath said distributer for regulating such current inwardly of the apron of distributed ma-f terial, and a return conduit, comprising an annular passage beneath said 'distributer and an upwardly extending annular foraminous extractor surrounding said passage.

19. In separators and the like, a casing, means for distributing material therein, means for causing a current to traverse such material, anda discharge chamber for such current, in comblnatlon with an annular up wardly extending filtering provision surrounded by said chamber, and a return passage inwardly of said provision and communicating through the latter with said chamber. 7

20. In separators and the like, a. casing, means for distributing material therein, a settling chamber, and passages leading to and from said chamber, in combination with a clarifier between said chamber and one of said passages.

21. In separators and the like, a casing, means for distributing material therein, a settling chamber and passages leading to and from the latter, in combination with an extractor, surrounding the passage leading from said chamber, and a separate cham ber for withdrawing material precipitated by said eXtractor. p v

22. In separators and the like, ajcasing, means for distributing material therein, a settling chamber, and passages leading from the latter, combination with an extractor chamber surrounding the passage leading from said chamber, and cleaning means mounted in said passages and discharging into said extractor chamber.

23. In separators andthe like, a distributer, means for causing a current to traverse material distributed thereby to remove floating material therefrom, a wall spaced opposite said distributer, a discharge chamber outwardly of said wall, and a return passage communicating with said chamber for returning current from the outer to the visions for intercepting floating material in the return current from said chamber.

24. In separators and similar devices, the

vcombination with a casing, means fordis tributing material therein, a circular screen in said casing and spaced belowsaid distribnting means,'means to aflord a. current passage above said screen, a blower, below said distributer and inwardly of said screen for causing a current to traverse distributed material above said screen, and means af-' fording a return passage for such current communicating between the passage above said screen and returning thecurrent within said screen, and separate outlets for coarse and fine materials.

25. In combination, means causing a current to traverse material to be screened, a

circular screen receiving such material, a' distributer spaced above'said screen to afford a passage above the latter for such current, a revolving part carrying strikers within said screen, and internal provisions carried by said screen for receiving the impact of said strikers for vibrating said screen.

26. In combination, means causing a current to traverse material to be screened, a circular screen receiving such material and afiording a current passage above its upper edge, a revolving striker for agitatin said screen, means carried by said screen or receiving the impact of said striker, said striker and means normally out of coincidence and the one movable relatively to the other to swing them into engagement, and means providing a current inlet to said screen.

2'2. In combination, means causing a current to traverse material to be screened, a conical screen affording a current passage inner side of said wall, in combination" with upwardly extending interstitial proabove it and receiving such material, means affording an annular return passage for I rent to flow outwardly through such mate rial, and means for jarring said screen.

29. In combination, means for distributing material-to be screened, a wire mesh screen below and spaced apart from such distributing means to adord a current passage above said screen, means for causing a current to traverse such material to float out fine material therefrom above said screen, and means. for causing a current to traverse the meshes of said screen in opposition to the passage therethrough of material screened thereby.

30. In combination, means for distributing material to be screened, an inclined screenbelow and spaced apart therefrom to aiford a current passageabove it, means for causing a flu1d current to traverse such ma- GEORGE HOLT FRASER.

Witnesses:

GUSTAV SCHONHEIT, ANTONIO BUoNo. 

